EPA Air · stack tests by county and year
Air-emissions stack tests in Suffolk County, New York, 2026
- 5Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Suffolk County, New York during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Suffolk County facility page.
Suffolk County, New York, 2026
- Inspections 138
Air-emissions stack tests in Suffolk County, other years
What stands out
- Stack tests in Suffolk County, New York, fell from 13 in 2025, the previous year on file, to 5 in 2026.
- The county’s file for stack tests holds 10 years of events, from 2017 through 2026.
- Its 5 stack tests rank 2nd of the 7 county cells in New York for 2026.
- Its 5 stack tests are 7.5% of the 67 the state’s file holds for 2026.
Every line is computed by formula from the state’s stored file; nothing is estimated.
Air-emissions stack tests recorded in Suffolk County, New York, 2026
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2026-08-25 | ISLIP MACARTHUR RESOURCE RECOVERY FACILITY | Pass | State |
| 2026-08-18 | BABYLON RESOURCE RECOVERY FACILITY | Pass | State |
| 2026-08-11 | COVANTA HUNTINGTON LLC | Pass | State |
| 2026-02-05 | PORT JEFFERSON ENERGY CENTER | Pass | State |
| 2026-02-03 | PORT JEFFERSON ENERGY CENTER | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.